Application Server support for CMP includes:
Support for commit options B and C for transactions, as defined in the Enterprise JavaBeans Specification, v2.1. See Commit Options.
The Application Server CMP implementation, which provides:
An Object/Relational (O/R) mapping tool that creates XML deployment descriptors for EJB JAR files that contain beans that use CMP
Support for compound (multi-column) primary keys
Support for sophisticated custom finder methods
CMP runtime support. See Configuring the CMP Resource.
Application Server performance-related features, including:
Version column consistency checking
For details, see Performance-Related Features.